177 entries under important topic. ×

6
essential(adjective, significant, original, substantial)
6
fundamental(adjective, significant, original, essential)
6
grand(adjective, lead, fine, head)
6
heavyweight(adjective, great, informal, serious)
6
major-league(adjective, great, large, serious)
6
number one(expression, adjective, bad, great, excellent)
6
special(noun, adjective, bad, great, excellent)
6
weighty(adjective, great, tough, severe, heavy)
5
eminent(adjective, bad, great, excellent, superior)
5
grievous(adjective, great, tough, severe, unpleasant)
5
material(adjective, significant, substantial, large)
5
prominent(adjective, wonderful, famous, exceptional)
4
dangerous(adjective, great, tough, severe, unpleasant)
4
excellent(adjective, bad, great, fine, superior)
4
famous(adjective, good, bad, great, excellent)
4
historic
4
meaningful(adjective, great, tough, severe)
4
premier(adjective, lead, head, master)
4
radical(adjective, great, significant, original)
4
well-known(adjective, bad, great, excellent, superior)
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APASmart Define. (2015). major thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/major/thesaurus/synonyms
ChicagoSmart Define. 2015. "major thesaurus" https://smartdefine.org/major/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, major thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/major/thesaurus/synonyms>.
MLASmart Define. "major thesaurus" 6 July 2015. Web. 23 September 2026. <https://smartdefine.org/major/thesaurus/synonyms>